Multi-seal float switch type automatic steam trap suitable for high-pressure gas
By designing a multi-seal float switch type automatic steam trap, using a multi-stage storage tank and float type exhaust valve structure, the problem of insufficient sealing of high-pressure gas steam traps is solved, and safe automatic steam drainage and leakage management in high-pressure environments are achieved, reducing costs and complexity.
Patent Information
- Application Number
- CN202423116251.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing high-pressure gas automatic steam traps are not sufficiently sealed and present a risk of leakage. In addition, existing control solutions are complex or costly, making it difficult to effectively manage gas leakage in high-pressure environments.
A multi-seal float switch type automatic steam trap was designed, which includes a primary and secondary steam trap storage tank. Through the pre-tightening handle, diaphragm, guide block and float type exhaust valve and other structures, multi-stage sealing and automatic steam trapping functions are realized, ensuring sealing in the dry state, automatic steam trapping in the water state, and diverting leaked gas when the valve fails.
It improves sealing and safety, reduces gas leakage, has a simple structure and low cost, and can effectively manage gas leakage in high-pressure environments to avoid potential dangers.
Smart Images
Figure CN223345136U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of steam traps, and in particular to a multi-seal float switch type automatic steam trap suitable for high-pressure gas. Background Art
[0002] Currently, most high-pressure gas automatic steam traps used in process production utilize float switches, or utilize a liquid level gauge in combination with a solenoid valve or pneumatic ball valve and a control unit such as a PLC to control the trap. Float switch automatic steam traps offer a relatively simple, reliable, and low-cost sealing structure. However, these traditional automatic steam traps have limited sealing surfaces and a low sealing rating. During high-pressure gas trapping, the float lever valve cannot close promptly after trapping is complete. The trap valve seal relies on the weight of the float, resulting in insufficient preload and insufficient sealing rating. Excessive gas pressure can easily lead to excessive leakage of hazardous gases, posing a potential risk to process production.
[0003] There are two main technical solutions for controlling draining. One is timed draining, which calculates the water production in the process system and uses a control unit to time the opening of a solenoid valve or ball valve to achieve draining. This solution is based on empirical process values and cannot monitor the drain liquid level. Timed draining also carries the risk of gas leakage. The other method uses a level measuring device to measure the liquid level in the drain device and transmit the level signal to a computing unit such as a PLC or DCS. When the liquid level reaches the set value, the control unit activates the drain solenoid valve or ball valve to achieve draining. This solution is more reliable, but the system is complex and relies on an electrical control unit, which is costly.
[0004] Therefore, in the high-pressure gas hydrophobic process, there is an urgent need for an automatic steam trap product with good sealing, high cost performance, simple and reliable structure, and easy leakage management. Utility Model Content
[0005] The disclosed embodiments provide a multi-seal float switch type automatic steam trap suitable for high-pressure gas. The steam trap can automatically seal when there is no water in the pipeline during the high-pressure gas steam trapping process, and can automatically drain water after there is water in the pipeline. At the same time, the leaked gas can be diverted and discharged after the valve fails.
[0006] According to a first aspect of an embodiment of the present disclosure, there is provided a multi-seal float switch type automatic steam trap suitable for high-pressure gas, the steam trap comprising a steam trap body, wherein the steam trap body is provided with a primary steam trap storage tank and a secondary steam trap storage tank;
[0007] The top of the primary hydrophobic storage tank is provided with a primary hydrophobic storage tank inlet, the bottom of the primary hydrophobic storage tank is provided with a primary hydrophobic storage tank outlet, the primary hydrophobic storage tank inlet is provided with a pre-tightening handle, the primary hydrophobic storage tank outlet is provided with a main hydrophobic valve, the top of the main hydrophobic valve is provided with a diaphragm, a guide block is provided above the diaphragm, the top end of the guide block is connected to the pre-tightening handle, the bottom end of the guide block is connected to the diaphragm, and a spring is provided at the connection between the diaphragm and the guide block;
[0008] The top of the secondary drain tank is provided with a secondary drain tank inlet, the bottom of the secondary drain tank is provided with a secondary drain tank outlet, and a lever floating valve is provided at the secondary drain tank outlet;
[0009] When the lever floating valve is opened, the secondary drain storage tank is communicated with the primary drain storage tank.
[0010] In this embodiment, by adding a drain tank and an exhaust valve, a multi-stage seal is achieved after the drain device is in operation. This allows the drain valve to be pre-tightened and sealed by the valve in the primary drain tank. Compared to conventional lever-float drain traps, which rely solely on the gravity of the float to achieve sealing, the drain trap provided by this disclosed embodiment has better sealing performance. Specifically, when the secondary drain tank is empty, the lever-float valve located at the outlet of the secondary drain tank closes, thereby sealing the inlet of the primary drain tank. When the water level in the secondary drain tank reaches a certain level, the lever-float valve located at the outlet of the secondary drain tank opens, allowing drain water to flow into the primary drain tank. Simultaneously, air is discharged through the exhaust valve, and the primary drain tank is vented through the exhaust valve. As the liquid level in the primary drain tank rises, the exhaust valve closes under the action of the float, and the pressure in the primary drain tank increases. When the pressure in the primary drain tank reaches the set pre-tightening pressure value, the diaphragm in the primary drain tank drives the valve core of the main drain valve to open, draining the drain water. The diaphragm then returns to its original position under the action of the spring, and the drain valve quickly closes.
[0011] In summary, the embodiments of the present disclosure provide a multi-seal float switch type automatic steam trap suitable for high-pressure gas. In the high-pressure gas steam trap process, it can automatically seal when there is no water in the pipeline, and can automatically drain water after there is water in the pipeline. At the same time, it can divert and discharge the leaked gas after the valve fails.
[0012] In one embodiment, a first-level drain tank exhaust port is provided on the first-level drain tank, and a float-type exhaust valve is provided at the first-level drain tank exhaust port.
[0013] In this embodiment, a primary steam trap tank exhaust port is provided on the primary steam trap tank, and a float-type exhaust valve is provided at the primary steam trap tank exhaust port, so that the leaked gas in the steam trap can be diverted and discharged through the primary steam trap tank exhaust port. In addition, when gas leakage occurs due to failure of the lever floating valve at the outlet of the secondary steam trap tank of the steam trap, the leaked gas can be diverted to a safe area for discharge through the primary steam trap tank exhaust port.
[0014] In one embodiment, an air pipe threaded interface is provided at the exhaust port of the first-level hydrophobic storage tank, and the air pipe threaded interface is used to connect to the air pipe.
[0015] In this embodiment, an air guide pipe threaded interface is provided at the exhaust port of the first-level hydrophobic storage tank, and the exhaust port of the first-level hydrophobic storage tank is connected to the air guide pipe through the air guide pipe threaded interface to discharge the leaked gas in the steam trap to a designated area.
[0016] In one embodiment, a normally open exhaust port is provided on the primary hydrophobic storage tank, and the normally open exhaust port is used to inject air into the diaphragm when it moves downward.
[0017] In this embodiment, a normally open exhaust port is provided on the primary hydrophobic storage tank, through which air can be injected into the primary hydrophobic storage tank, so as to inject air when the diaphragm resumes its downward movement.
[0018] In one embodiment, the secondary hydrophobic storage tank is provided with a secondary hydrophobic storage tank exhaust port, and the secondary hydrophobic storage tank exhaust port is connected to an exhaust process pipeline.
[0019] In this embodiment, a secondary hydrophobic storage tank exhaust port is provided on the secondary hydrophobic storage tank, and the secondary hydrophobic storage tank exhaust port is connected to the exhaust process pipeline to discharge the leaked gas in the hydrophobic storage tank into the exhaust process pipeline.
[0020] In one embodiment, the outlet height of the primary hydrophobic storage tank is higher than the outlet height of the secondary hydrophobic storage tank.
[0021] In this embodiment, by setting the outlet height of the first-level hydrophobic storage tank to be higher than the outlet height of the second-level hydrophobic storage tank, the lever floating valve arranged at the outlet of the second-level hydrophobic storage tank can be kept in a water seal between the outlet of the first-level hydrophobic storage tank and the outlet of the second-level hydrophobic storage tank after continuous operation, so that the entire drainage process in the valve is in a high-pressure water seal, reducing gas leakage.
[0022] In one embodiment, a stepped mounting platform is provided on the inner wall of the first-level hydrophobic storage tank, a stepped gasket is provided on the stepped mounting platform, and the bottom of the diaphragm is provided on the mounting position formed by the stepped mounting platform and the stepped gasket.
[0023] In this embodiment, a stepped mounting platform is provided on the inner wall of the primary hydrophobic storage tank, and a stepped gasket is provided on the stepped mounting platform, so that the bottom of the diaphragm can be stably installed on the mounting position formed by the stepped mounting platform and the stepped gasket.
[0024] In one embodiment, the diaphragm is configured as a T-shaped structure, the head end of the T-shaped structure is fixed to the mounting position, and the tail end of the T-shaped structure is connected to the guide block.
[0025] In this embodiment, the diaphragm is set as a T-shaped structure, and the head end of the T-shaped structure is fixed on the mounting position formed by the step mounting platform and the step gasket, and the tail end of the T-shaped structure is connected to the guide block to ensure that the diaphragm cannot swing left and right or front and back during the up and down movement.
[0026] In one embodiment, a guide block connecting groove is provided on one end of the guide block connected to the diaphragm, and the tail end of the T-shaped structure extends into the guide block connecting groove to achieve connection between the diaphragm and the guide block;
[0027] A guide block connecting column is provided on one end of the guide block connected to the pre-tightening handle, and a handle connecting groove is provided on the pre-tightening handle. The guide block connecting column extends into the handle connecting groove to realize the connection between the guide block and the pre-tightening handle;
[0028] A guide block connecting strip is provided around the guide block, and the guide block connecting strip is clamped on the inner wall of the first-level hydrophobic storage tank.
[0029] In this embodiment, a guide block connecting groove is provided on the end of the guide block connected to the diaphragm, and the tail end of the T-shaped structure is extended into the guide block connecting groove to achieve a tight connection between the diaphragm and the guide block, so that the guide block can drive the diaphragm to move up and down when it moves up and down; a guide block connecting column is provided on the end of the guide block connected to the pre-tightening handle, and a handle connecting groove is provided on the pre-tightening handle, and the guide block connecting column is extended into the handle connecting groove to achieve a tight connection between the guide block and the pre-tightening handle, so that the guide block can be driven to move up and down when the pre-tightening handle is rotated; a guide block connecting strip is provided in the circumference of the guide block, so that the guide block is clamped to the inner wall of the first-level hydrophobic storage tank through the guide block connecting strip to further prevent the guide block from shaking left and right or front and back during the up and down movement.
[0030] In one embodiment, the secondary drain tank inlet is connected to a U-shaped pipe drain interface or a gas drain tank.
[0031] In this embodiment, the inlet of the secondary drain tank can be connected to the U-shaped pipe drain interface or the gas drain tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 Schematic diagram of the structure of a multi-seal float switch type automatic steam trap suitable for high-pressure gas in this embodiment.
[0033] In the figure, 10-first-level hydrophobic storage tank, 20-second-level hydrophobic storage tank, 101-first-level hydrophobic storage tank inlet, 102-first-level hydrophobic storage tank outlet, 103-pre-tightening handle, 104-main hydrophobic valve, 105-diaphragm, 106-guide block, 107-spring, 108-first-level hydrophobic storage tank exhaust port, 109-float type exhaust valve, 1010-air guide pipe threaded interface, 1011-normally open exhaust port, 1012-step mounting platform, 1013-step gasket, 201-second-level hydrophobic storage tank inlet, 202-second-level hydrophobic storage tank outlet, 203-lever floating valve, 204-second-level hydrophobic storage tank exhaust port, 2031-float. DETAILED DESCRIPTION
[0034] The present disclosure will be described in detail below with reference to embodiments and drawings. It should be noted that the described embodiments are only intended to facilitate understanding of the present disclosure and do not have any limiting effect on the present disclosure.
[0035] Figure 1 FIG. 1 is a structural diagram of a multi-seal float switch type automatic steam trap suitable for high pressure gas in this embodiment. Figure 1 As shown, the steam trap includes a steam trap body, on which a primary steam trap storage tank 10 and a secondary steam trap storage tank 20 are provided;
[0036] A first-level drain tank inlet 101 is provided at the top of the first-level drain tank 10, and a first-level drain tank outlet 102 is provided at the bottom of the first-level drain tank 10. A pre-tightening handle 103 is provided at the first-level drain tank inlet 101, and a main drain valve 104 is provided at the first-level drain tank outlet 102. A diaphragm 105 is provided at the top of the main drain valve 104, and a guide block 106 is provided above the diaphragm 105. The top end of the guide block 106 is connected to the pre-tightening handle 103, and the bottom end of the guide block 106 is connected to the diaphragm 105. A spring 107 is provided at the connection between the diaphragm 105 and the guide block 106;
[0037] The top of the secondary drain tank 20 is provided with a secondary drain tank inlet 201, the bottom of the secondary drain tank 20 is provided with a secondary drain tank outlet 202, and the secondary drain tank outlet 202 is provided with a lever floating valve 203;
[0038] When the lever floating valve 203 is opened, the secondary drain tank 20 is connected to the primary drain tank 10 .
[0039] In this embodiment, by adding devices such as a drain tank and an exhaust valve, a multi-stage seal is achieved after the drain device is in operation, allowing the drain valve to be pre-tightened and sealed by the valve of the primary drain tank 10. Compared with the original lever float drain trap, which can only rely on the gravity of the float to achieve sealing, the drain trap provided by the embodiment of the present disclosure has better sealing performance. Specifically, when there is no water in the secondary drain tank 20, the lever float valve 203 located at the outlet 202 of the secondary drain tank is closed to close the inlet 101 of the primary drain tank; when the water level of the secondary drain tank 20 reaches a certain height, the lever float valve located at the outlet 202 of the secondary drain tank is opened, and the drain flows into the primary drain tank 10. At the same time, the air is discharged through the exhaust valve, and the primary drain tank 10 is exhausted through the exhaust valve. As the liquid level in the first-stage steam trap storage tank 10 rises, the exhaust valve closes under the action of the float, and the pressure in the first-stage steam trap storage tank 10 rises. When the pressure in the first-stage steam trap storage tank 10 reaches the set pre-tightening pressure value, the diaphragm 105 in the first-stage steam trap storage tank 10 drives the valve core of the main steam trap valve 104 to open, and the water is discharged. The diaphragm 105 recovers under the action of the spring 107, and the steam trap valve closes quickly.
[0040] In summary, the embodiments of the present disclosure provide a multi-seal float switch type automatic steam trap suitable for high-pressure gas. In the high-pressure gas steam trap process, it can automatically seal when there is no water in the pipeline, and can automatically drain water after there is water in the pipeline. At the same time, it can divert and discharge the leaked gas after the valve fails.
[0041] like Figure 1 As shown, the first-level drain tank 10 is provided with a first-level drain tank exhaust port 108 , and the exhaust port of the first-level drain tank 10 is provided with a float-type exhaust valve 109 .
[0042] In this embodiment, a primary steam trap storage tank exhaust port 108 is provided on the primary steam trap storage tank 10, and a float-type exhaust valve 109 is provided at the exhaust port of the primary steam trap storage tank 10, so that the leaked gas in the steam trap can be diverted and discharged through the primary steam trap storage tank exhaust port 108. In addition, when gas leakage occurs due to failure of the lever floating valve 203 at the secondary steam trap storage tank outlet 202 of the steam trap, the leaked gas can be diverted to a safe area for discharge through the primary steam trap storage tank exhaust port 108.
[0043] like Figure 1 As shown, an air pipe threaded interface 1010 is provided at the exhaust port of the first-level hydrophobic storage tank 10, and the air pipe threaded interface 1010 is used to connect with the air pipe.
[0044] In this embodiment, an air pipe threaded interface 1010 is provided at the exhaust port of the first-level hydrophobic storage tank 10, so that the exhaust port of the first-level hydrophobic storage tank 10 is connected to the air pipe through the air pipe threaded interface 1010 to discharge the leaked gas in the steam trap to a designated area.
[0045] like Figure 1 As shown, the primary hydrophobic storage tank 10 is provided with a normally open exhaust port 1011 , and the normally open exhaust port 1011 is used to inject air into the diaphragm 105 when it moves downward.
[0046] In this embodiment, a normally open exhaust port 1011 is provided on the primary hydrophobic storage tank 10 , through which air can be injected into the primary hydrophobic storage tank 10 , so as to inject air when the diaphragm 105 resumes its downward movement.
[0047] like Figure 1 As shown, the secondary drain tank 20 is provided with a secondary drain tank exhaust port 204 , and the secondary drain tank exhaust port 204 is connected to an exhaust process pipeline.
[0048] In this embodiment, a secondary hydrophobic storage tank exhaust port 204 is provided on the secondary hydrophobic storage tank 20 and the secondary hydrophobic storage tank exhaust port 204 is connected to the exhaust process pipeline to discharge the leaked gas in the hydrophobic storage tank into the exhaust process pipeline.
[0049] Preferably, the height of the first-level drain tank outlet 102 is higher than the height of the second-level drain tank outlet 202 .
[0050] In this embodiment, by setting the height of the first-level hydrophobic storage tank outlet 102 to be higher than the height of the second-level hydrophobic storage tank outlet 202, the lever floating valve 203 set at the second-level hydrophobic storage tank outlet 202 can be kept in a water seal between the first-level hydrophobic storage tank outlet 102 and the second-level hydrophobic storage tank outlet 202 after continuous operation, so that the entire drainage process in the valve is in a high-pressure water seal, reducing gas leakage.
[0051] like Figure 1 As shown, a stepped mounting platform 1012 is provided on the inner wall of the first-level hydrophobic storage tank 10, a stepped gasket 1013 is provided on the stepped mounting platform 1012, and the bottom of the diaphragm 105 is provided on the mounting position formed by the stepped mounting platform 1012 and the stepped gasket 1013.
[0052] In this embodiment, a stepped mounting platform 1012 is provided on the inner wall of the first-level hydrophobic storage tank 10, and a stepped gasket 1013 is provided on the stepped mounting platform 1012, so that the bottom of the diaphragm 105 can be stably installed on the mounting position formed by the stepped mounting platform 1012 and the stepped gasket 1013.
[0053] like Figure 1 As shown, the diaphragm 105 is configured as a T-shaped structure, the head end of the T-shaped structure is fixed to the mounting position, and the tail end of the T-shaped structure is connected to the guide block 106 .
[0054] In this embodiment, the diaphragm 105 is set as a T-shaped structure, and the head end of the T-shaped structure is fixed on the mounting position formed by the step mounting platform 1012 and the step gasket 1013, and the tail end of the T-shaped structure is connected to the guide block 106 to ensure that the diaphragm 105 cannot swing left and right or forward and backward during the up and down movement.
[0055] like Figure 1 As shown, a guide block 106 connecting groove is provided on one end of the guide block 106 connected to the diaphragm 105, and the tail end of the T-shaped structure extends into the guide block 106 connecting groove to realize the connection between the diaphragm 105 and the guide block 106;
[0056] The guide block 106 is provided with a guide block 106 connecting column at one end connected to the pre-tightening handle 103, and the pre-tightening handle 103 is provided with a handle connecting groove, and the guide block 106 connecting column extends into the handle connecting groove to realize the connection between the guide block 106 and the pre-tightening handle 103;
[0057] A guide block 106 connecting strip is provided around the guide block 106 , and the guide block 106 connecting strip is clamped on the inner wall of the primary hydrophobic storage tank 10 .
[0058] In this embodiment, a guide block 106 connecting groove is provided on the end of the guide block 106 connected to the diaphragm 105, and the tail end of the T-shaped structure is extended into the guide block 106 connecting groove to achieve a tight connection between the diaphragm 105 and the guide block 106, so that the guide block 106 can drive the diaphragm 105 to move up and down when it moves up and down; a guide block 106 connecting column is provided on the end of the guide block 106 connected to the pre-tightening handle 103, and a handle connecting groove is provided on the pre-tightening handle 103, and the guide block 106 connecting column is extended into the handle connecting groove to achieve a tight connection between the guide block 106 and the pre-tightening handle 103, so that the guide block 106 can be driven to move up and down when the pre-tightening handle 103 is rotated; a guide block 106 connecting strip is provided in the circumference of the guide block 106, so that the guide block 106 is clamped to the inner wall of the first-level hydrophobic storage tank 10 through the guide block 106 connecting strip to further prevent the guide block 106 from shaking left and right or back and forth during the up and down movement.
[0059] Optionally, the secondary drain tank inlet 201 is connected to a U-shaped pipe drain interface or a gas drain tank.
[0060] In this embodiment, the secondary drain tank inlet 201 can be connected to a U-shaped pipe drain interface or a gas drain tank.
[0061] The present disclosure provides an automatic steam trap with multiple seals and float switches for high-pressure gas, the working principle of which is as follows:
[0062] The multi-seal float switch-type automatic steam trap for high-pressure gas in the disclosed embodiment is installed at the U-shaped pipe drain interface or on the gas drain tank. When water is present in the U-shaped pipe or the drain tank, the water will drain into the automatic steam trap's secondary drain tank 20. The gas in the secondary drain tank 20 can be discharged into the process pipeline through the secondary drain tank exhaust port 204. When the water level in the secondary drain tank 20 reaches a certain height, the float on the lever floating valve 203 located at the secondary drain tank outlet 202 drives the lever to open the drain port of the secondary drain tank 20, allowing the drain to enter the primary drain tank 10. At the same time, the air in the primary drain tank 10 is discharged through the float exhaust valve 109 located at the exhaust port of the primary drain tank 10. If the water in the secondary drain tank 20 continues to drain into the primary drain tank 10, the liquid level in the primary drain tank 10 rises. When it reaches a certain height, the float 2031 of the float-type exhaust valve 109 provided at the exhaust port of the primary drain tank 10 closes the exhaust port under the action of buoyancy. When the drain water in the secondary drain tank 20 continues to flow into the primary drain tank 10, the pressure in the primary drain tank 10 begins to rise. When the pressure in the primary drain tank 10 is greater than the pressure of the preload spring 107, the diaphragm 105 begins to move upward under the action of pressure, and the primary drain tank 10 begins to drain. In the early stage of draining the secondary drain tank 20, the primary drain valve does not drain water. When the primary drain tank 10 begins to drain water, the liquid level in the primary drain tank 10 is already high, and the liquid level is higher than the outlet of the secondary drain tank 20.
[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit the scope of protection of the present disclosure. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present disclosure.
Claims
1. A multi-seal float switch type automatic steam trap suitable for high-pressure gas, characterized in that: The steam trap comprises a steam trap body, and the steam trap body is provided with a primary steam trap storage tank and a secondary steam trap storage tank; The top of the primary hydrophobic storage tank is provided with a primary hydrophobic storage tank inlet, the bottom of the primary hydrophobic storage tank is provided with a primary hydrophobic storage tank outlet, the primary hydrophobic storage tank inlet is provided with a pre-tightening handle, the primary hydrophobic storage tank outlet is provided with a main hydrophobic valve, the top of the main hydrophobic valve is provided with a diaphragm, a guide block is provided above the diaphragm, the top end of the guide block is connected to the pre-tightening handle, the bottom end of the guide block is connected to the diaphragm, and a spring is provided at the connection between the diaphragm and the guide block; The top of the secondary drain tank is provided with a secondary drain tank inlet, the bottom of the secondary drain tank is provided with a secondary drain tank outlet, and the secondary drain tank outlet is provided with a lever floating valve; When the lever floating valve is opened, the secondary drain storage tank is communicated with the primary drain storage tank.
2. The multi-seal float switch type automatic steam trap suitable for high-pressure gas according to claim 1, characterized in that: The first-level drain tank is provided with a first-level drain tank exhaust port, and the first-level drain tank exhaust port is provided with a float type exhaust valve.
3. The multi-seal float switch type automatic steam trap suitable for high-pressure gas according to claim 2, characterized in that: An air guide pipe threaded interface is provided at the exhaust port of the first-level hydrophobic storage tank, and the air guide pipe threaded interface is used to connect with the air guide pipe.
4. The multi-seal float switch type automatic steam trap suitable for high-pressure gas according to claim 3, characterized in that: The first-level hydrophobic storage tank is provided with a normally open exhaust port, and the normally open exhaust port is used to inject air into the diaphragm when it moves downward.
5. The multi-seal float switch type automatic steam trap suitable for high-pressure gas according to any one of claims 1 to 4, characterized in that: The secondary drain tank is provided with a secondary drain tank exhaust port, and the secondary drain tank exhaust port is connected to the exhaust process pipeline.
6. The multi-seal float switch type automatic steam trap suitable for high-pressure gas according to any one of claims 1 to 4, characterized in that: The outlet height of the first-level drain storage tank is higher than the outlet height of the second-level drain storage tank.
7. The multi-seal float switch type automatic steam trap suitable for high-pressure gas according to any one of claims 1 to 4, characterized in that: A stepped mounting platform is provided on the inner wall of the first-level hydrophobic storage tank, a stepped gasket is provided on the stepped mounting platform, and the bottom of the diaphragm is provided on the mounting position formed by the stepped mounting platform and the stepped gasket.
8. The multi-seal float switch type automatic steam trap suitable for high-pressure gas according to claim 7, characterized in that: The diaphragm is configured as a T-shaped structure, the head end of the T-shaped structure is fixed to the mounting position, and the tail end of the T-shaped structure is connected to the guide block.
9. The multi-seal float switch type automatic steam trap suitable for high-pressure gas according to claim 8, characterized in that: A guide block connecting groove is provided on one end of the guide block connected to the diaphragm, and the tail end of the T-shaped structure extends into the guide block connecting groove to achieve the connection between the diaphragm and the guide block; A guide block connecting column is provided on one end of the guide block connected to the pre-tightening handle, and a handle connecting groove is provided on the pre-tightening handle. The guide block connecting column extends into the handle connecting groove to realize the connection between the guide block and the pre-tightening handle; A guide block connecting strip is provided around the guide block, and the guide block connecting strip is clamped on the inner wall of the first-level hydrophobic storage tank.
10. The multi-seal float switch type automatic steam trap suitable for high-pressure gas according to any one of claims 1 to 4, characterized in that: The inlet of the secondary drain tank is connected to the U-shaped pipe drain interface or the gas drain tank.